Lawn mower attachment



June s, 1933. A. SMATH Er AL 1,913,094'

y LAWN MowER ATTACHMENT Patented June 6, 1933 UNIT-ED STATE-S PATENT omer.

. ALBERT BIATH AND ERNEST BAY-EB, OF EAST ISLIP, NEW YORK LAWN uowEn uracmlnn'r Appunti@ mea october s, maa. semi no. mma

The present invention relates to new and useful improvements in lawn mowers, and has for its primary object to provide, in a manner as hereinafter set forth, an attachment for lawn mowers, for cutting weeds and comparatively tall grass, thus materially increasing the efficiency of' said lawn mower.

Another very important object of the invention is vto provide an attachment ofthe 1 aforementioned character for lawn mowers including a reciprocating cutter, together with novel means through the medium of which said cutter may be conveniently and expeditiously connected to the mower for' actuation thereby ,or disconnected from said' mower. gv Other objects of the invention are to provide a lawn mower attachment of the'character described which will be simple in construction, strong, durable, highly eiiicient andreliable in operation, compact, light in weight, which may be quickly mounted on y a conventional lawn mower without the ne' cessity of materially altering said mower structurally, and which may be manufactured at low cost.

All of the fc regoing and still further objects and advantages of the invention, will become apparent from a study of the following speciication, taken in connection with the accompanying drawings=. wherein like characters of reference 4'designate correspond-` ing parts thruout the several views, and

Figure 1 is a view-in front elevation of a lawn mower with an attachment in accordance with the present invention mounted for operation thereon.

Fig. 2 is a view in vertical longitudinal section, taken substantially on the line 2-2 Fig. 3 is a view fin horizontal section through the attachment, taken substantially on the line 3-3 of Fig. 1. i

Fi 4 is a detail view in front' elevation,

showing the reciprocating cutter of the attachment disconnected from the mower.

Referring now to the drawings in detail, it will be seen that the embodiment of the invention which'has been illustrated combellcrank lever 15 in one prises a Ypair of metallic brackets 1 which are secured, through the medium of suitable clamps 2, to the usual stationary transverse bar 3 of a conventional lawn mower which is designated generally by the reference numeral 4. The brackets 1 extend downwardly and forwardly from the bar 2 of the mower 4 and terminate, at their lower ends,'in for` wardly projecting horizontaPportios '5 upo on which a guard plate 6 is mcunted. A toothed cutter bar 7 is mounted for reciprocation on the guard 6 and/V is slidably secured thereon through the medium of bolts 8 which are anchored in said uard 5 and which extend through slots 9 whic are provided therefor in the cutter bar 7. The cutter bar 7 is actuated in one direction by a coil spring 10 havin one end connected 'to said cutter bar an itsi other end con- 7 nected to one of the bolts 8. Rising from one end portion of 6 is a substantially U-shaped frame 11 through the lower portion o which an upwardly offsetA arm 12 on the adjacent end of the cutter bar 7 slidably extends. The arm '12 is providedwith an openin 13 in its free end portion 'which receives t e arm 14 of a sectional bell crank lever which is designated nerally by the reference numeral'l. he sectlonal bell` crank lever 15 is mounted for swin ing movement in a vertical plane inthe `rame 11 on a ypin 16 in said frame. The bell crank lever 15 furthe guard `ther includes an arm 17 which is operativelyv connected to the arm 14 for'actuating said arm 14 in one direction by a nger 18 which 'projects from the pivoted end of said arm 17. As will be seen, the arms 14 and 17 of the bell crank lever 15 are' mounted for swinging movement on the ivot pin 16 and. the construction is sucht at the arm 17 ma be swung away from the arm 14. The spo es 19 of; one of the wheels 20 ofthe mower engage the arm 17 for actuating the 95 direction. When thus actuated, the bell crank lever Iii-moves the cutter bar 7 `against the tension of the coil spring 10, said coil Yspring actuating the cutter bar in the Aopposite vdirection.4

vly U-shaped framev The' reciprocating movement of the cutter is controlled or regulated b the distance between the spokes on the wlieels and the angle between the arms 14 and 17 and these may be so arranged as to producethe desired reclprocation. t

It will thus be seen that the cutter bar 7 is mounted for operation forwardl usual cutting mechanism 21 of t e lawn mower 4 for cutting weeds and comparatively long grass. When ,it is desired to render the attachment inoperative this may be conveniently and expeditiously accomplished by simply swinging the arm 17 of the sectional bell crank 15 upwardlI to a position out of the path of the spo es 19 on the adjacent wheel 20 of the as is clearly illustrated in Fig. 4 of the drawings. If desirable or necessary, any suitable means may be provided for securin the arm` 17 in ralsed or inoperative position.

It is believed that the many advantages of a lawn mower attachment constructed in accordance with the present invention will be readily understood, and although the preferred embodiment of the invention is as illustrated and described, it is to be understood that changes in the details of construction and in the combination and arrangement of parts may be resorted to which will fall within the scope of the invention as claimed.

Having thus described our invention what we claim as new is An attachment for wheeled lawn mowers,

wherein the wheels are provided with spokes,A

brackets mounted on the mower, a guard plate mounted on the brackets, a substantialportion of the guard plate, a cutter bar mounted for reciprocation on the guard plate, an upwardly oset arm'on'one end of the cutter bar extending slidably through the frame, said arm having an opening 1n its free end portion, a bell crank lever pivotally mounted in the frame and operatively associating said cutter bar to one of the mower wheels of the mower for actuation thereby, the bell crank lever comprising a pair of independently movable arms, one of said arms being engaged in the opening in the cutter bar arm, the other of said arms being engageable by the spokes of one wheel of the for actuation thereby, and a finger on sald other arm engageable with said one arm for actuati same in one direction.

In testimony w ereof we aix our signatures.

ALBERT SMATH. ERNEST BAYER.

of the I lawn mower,

extending from one end 

